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Contains:  Maia nebula, Merope nebula, NGC 1432, NGC 1435, The star 18Tau, The star Atlas (27Tau), The star Celaeno (16Tau), The star Electra (17Tau), The star Merope (23Tau), The star Pleione (28Tau), The star Sterope I (21Tau), The star Taygeta (19Tau), The star ηTau
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Pleiades (M45) - 300mm, 



    
        

            Matt Stahl
Pleiades (M45) - 300mm
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Pleiades (M45) - 300mm

Technical card


Dates:March 9, 2018

Frames: 37x60" ISO1600

Integration: 0.6 hours

Darks: ~31

Flats: ~30

Bias: ~30

Avg. Moon age: 22.15 days

Avg. Moon phase: 49.93%

Bortle Dark-Sky Scale: 7.00

Mean FWHM: 10.76

Temperature: 2.20


Basic astrometry details

Astrometry.net job: 1963216

RA center: 3h 46' 15"

DEC center: +24° 5' 38"

Pixel scale: 1.582 arcsec/pixel

Orientation: 7.369 degrees

Field radius: 1.965 degrees


Resolution: 7276x5198

Locations: Charlestown, Charlestown, RI, United States

Data source: Backyard

Description

This is 2x drizzle, originally 4x6 and cropped to 5x7. 1600 ISO has more noise than I like, so I did my best to find an NR balance in post that didn't remove too much detail. I had to reject 1/3 of my subs due to clouds, and I should've taken more darks/flats/bias frames.

This version (as opposed to https://astrob.in/336924/C/) is my 1st time using DBE. It got rid of the brownish background that plagued the other.

Looks like my lens exhibits coma off-center (center-of-field is actually bottom right in this crop). I also realized afterwards that I had left a UV filter in place, which might also have been a contributing factor.

Comments

Author

mgstahl
Matt Stahl
License: None (All rights reserved)
1540
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Revisions

  • Pleiades (M45) - 300mm, 



    
        

            Matt Stahl
    Original
  • Pleiades (M45) - 300mm, 



    
        

            Matt Stahl
    B
  • Pleiades (M45) - 300mm, 



    
        

            Matt Stahl
    C
  • Final
    Pleiades (M45) - 300mm, 



    
        

            Matt Stahl
    D

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Pleiades (M45) - 300mm, 



    
        

            Matt Stahl